Solution - Raising to a power

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "^-2" was replaced by "^(-2)".

Step  1  :

 1.1     9 = 32

(9)^-2 = (3²)^(-2) = (3)^(-4)

Equation at the end of step  1  :

  (80) • (3)(-4)
 Step  2  :

Final result :

   1           
  —— = 0.01235 
  81